Satellite communications systems and methods using diverse polarizations
First Claim
1. A satellite communications method comprising:
- assigning a first polarization to a first class of terminals based on membership in the first class;
assigning a second polarization to a second class of terminals based on membership in the second class, wherein the first and second polarizations are substantially different; and
communicating between a satellite and the respective first and second classes of terminals using the substantially different first and second polarizations.
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Accused Products
Abstract
Communications occur between a satellite and respective first and second classes of terminals using substantially different polarizations. The first class of terminals may include fixed and/or vehicle-based terminals, and the second class of terminals may include handheld terminals. The second class of terminals may include terminals configured to preferentially receive and/or transmit linearly polarized signals, for example, terminals with substantially linearly polarized antennas, and the first class of terminals may include terminals configured to preferentially receive and/or transmit circularly polarized signals, for example, terminals with patch and/or helical antennas configured to transmit and/or receive substantially circularly polarized signals.
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Citations
24 Claims
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1. A satellite communications method comprising:
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assigning a first polarization to a first class of terminals based on membership in the first class; assigning a second polarization to a second class of terminals based on membership in the second class, wherein the first and second polarizations are substantially different; and communicating between a satellite and the respective first and second classes of terminals using the substantially different first and second polarizations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A satellite communications system comprising:
a satellite configured to communicate with respective first and second classes of terminals using substantially different polarizations such that the first class of terminals are assigned the first polarization based on membership in the first class and the second class of terminals are assigned the second polarization based on membership in the second class. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
- 21. A wireless terminal configured to communicate with a satellite using substantially different polarizations in respective first and second modes of operation, wherein the terminal is configured to transmit signals having substantially a first polarization in the first mode and to transmit signals having substantially a second polarization in the second mode.
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24. A satellite configured to receive substantially linearly polarized signals from a first class of radioterminals and to receive substantially circularly polarized signals from a second class of radioterminals, wherein the satellite is further configured to receive a signal from a radioterminal of the first class of radioterminals by receiving a substantially RHCP component of the signal and a substantially LHCP component of the signal.
Specification